AIS328DQ Datasheet, PDF (12/43 Pages) STMicroelectronics – High-performance ultra low-power 3-axis accelerometer

Mechanical and electrical specifications
Figure 3. SPI slave timing diagram ⁽²⁾
CS ₍₃₎
SPC (3)
t_su(CS)
SDI (3)
SDO (3)
t_c(SPC)
t_su(SI)
t_h(SI)
MSB IN
t_v(SO)
MSB OUT
t_h(SO)
AIS328DQ
(3)
t_h(CS)
(3)
LSB IN
(3)
t_dis(SO)
LSB OUT
(3)
1. Values are guaranteed at 10 MHz clock frequency for SPI with both 4 and 3 wires, based on characterization results, not
tested in production.
2. Measurement points are made at 0.2·Vdd_IO and 0.8·Vdd_IO, for both input and output ports.
3. When no communication is ongoing, data on CS, SPC, SDI and SDO are driven by internal pull-up resistors.
2.3.2
I²C - inter IC control interface
Subject to general operating conditions for Vdd and top.
Table 6. I²C slave timing values
Symbol
Parameter
I²C standard mode ⁽¹⁾
Min.
Max.
f_(SCL)
t_w(SCLL)
t_w(SCLH)
t_su(SDA)
t_h(SDA)
SCL clock frequency
SCL clock low time
SCL clock high time
SDA setup time
SDA data hold time
0
100
4.7
4.0
250
0.01
3.45
t_h(ST)
START condition hold time
4
t_su(SR)
Repeated START condition
setup time
4.7
t_su(SP)
STOP condition setup time
4
t_w(SP:SR)
Bus free time between STOP
and START condition
4.7
1. Data based on standard I²C protocol requirement, not tested in production.
I²C fast mode ⁽¹⁾
Min.
Max.
Unit
0
400
KHz
1.3
µs
0.6
100
ns
0.01
0.9
µs
0.6
0.6
µs
0.6
1.3
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Doc ID 18160 Rev 3